Counter Strike

What can you attach to your sentry as a dispenser? Anything that can attain its target in a straight line is better than anything that has a parabolic trajectory, this since the software doesn’t take distance and therefore trajectory into account. In addition that you will need a mother of a targeting algorithm in order to make this work you will also need to factor in distance and other environmental factors in order to attain your target, so slingshots, catapults or trebuchets are out. Although i do admit that we are currenlty developing a version that factors in distance in the firing solution so when that is ready you will be able to attach high parabolic trajectory dispensers.

What is good to attach largely depends on your desired goal for the sentry but I will give you a couple of ideas.

- Air pressure water pistol - Advantage, water is always fun. Disadvantage, water and electronics don’t mix well,reloading of air and water taking away from the sentry experience. However an espresso machine pump attached to a pressure switch for the water reservoir could make and interesting combo as these (vibration) pumps can deliver 15 bars of pressure. Additionally watch out for over-pressurization of the water reservoir.

- Electromotor driven bb gun - Advantage, light weight, easy to get and hook up. Disadvantage, low power/distance, messy and have to reload allot. If you want to go with this option think about rate of fire and perhaps making a mosfet switch for the gun, its easier to control. Additionally you want to increase the strength of the spring and overpower the electromotor or change it. Also take out the batteries and attach a direct power supply.

- Co2 pressure bb gun/paintball - Advantage, light weight, easy to get and hook up. Disadvantage, power/distance, messy and reload ammo and gas

- Vortex block bb gun attached to 8 bar compressor - Advantage,light, power, distance, high rate of fire. Disadvantage, bulky compressor, high-air usage, very messy. You need to hook the trigger/relay servo to a high-speed solenoid or air-gun for triggering.

- A taser - Advantage, incapacitate your threat pretty good. Disadvantage, hope the threat doesn’t have a pacemaker, hope you don’t get hit yourself.

- Last but not least and my personal favorite. The high powered laser. - Advantages, Projectile travels at the speed of light. Very light as you will tilt the servo assembly 90 degrees forward and put the laser in a position that it fires straight up and aims into a mirror that is attached to the servos for targeting. Very light means Very fast. Virtually no trajectory influences. No reloading. Just a large amount of electricity. Small size

Disadvantages, trying to shoot something that has a reflective surface such as a mirror or fragmenting crystal L (unless you use a pulsed laser at frequency). Use a lot of electrical power so large batteries or other strong power supply is needed, chemical laser is not a good idea, blowup risk.

Fun factor, It can cut through almost everything or burn a text/picture into something when programmed right, if the target stays in place when you do this.

What is also important is to be able to adjust the position of the dispenser on the servos, this because when you turn it on for the first time you will need to set the dispenser to the start position (level and straight), in the first calibration. Thankfully you will have to do this calibration only once. Whatever you do you will have to incorporate a laser on your dispenser as you will need it for camera/servo calibration and for the cool factor.